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WO2008045684A3 - Squib driver circuit diagnostic system and method - Google Patents

Squib driver circuit diagnostic system and method Download PDF

Info

Publication number
WO2008045684A3
WO2008045684A3 PCT/US2007/079584 US2007079584W WO2008045684A3 WO 2008045684 A3 WO2008045684 A3 WO 2008045684A3 US 2007079584 W US2007079584 W US 2007079584W WO 2008045684 A3 WO2008045684 A3 WO 2008045684A3
Authority
WO
WIPO (PCT)
Prior art keywords
squib
diagnostic
circuits
circuit
fault
Prior art date
Application number
PCT/US2007/079584
Other languages
French (fr)
Other versions
WO2008045684A2 (en
Inventor
Robert Kuivenhoven
Original Assignee
Renesas Tech Corp
Robert Kuivenhoven
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Renesas Tech Corp, Robert Kuivenhoven filed Critical Renesas Tech Corp
Publication of WO2008045684A2 publication Critical patent/WO2008045684A2/en
Publication of WO2008045684A3 publication Critical patent/WO2008045684A3/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
    • B60R21/017—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including arrangements for providing electric power to safety arrangements or their actuating means, e.g. to pyrotechnic fuses or electro-mechanic valves
    • B60R21/0173—Diagnostic or recording means therefor

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Air Bags (AREA)

Abstract

A squib driver module comprises a squib circuit for deploying a squib, e.g., in an airbag assembly, the squib circuit including a high side driver and a low side driver in combination for driving a firing signal to the squib: a circuit for activating the firing signal in response to a firing condition; squib diagnostic circuits for conducting diagnostic tests without activating the firing signal and without delivering a diagnostic signal equivalent of the firing signal to the squib, and for generating digital fault information based on the tests; registers for storing the fault information; logic for recognizing a fault condition based on the fault information; and a communication module for communicating the fault condition to a microprocessor unit. The squib diagnostic circuit may include node voltage diagnostic circuits, USD and/or LSD open/short circuits, USD and/or LSD driver fault diagnostic circuits, squib-squib short diagnostic circuits, and/or squib resistance diagnostic circuits.
PCT/US2007/079584 2006-10-05 2007-09-26 Squib driver circuit diagnostic system and method WO2008045684A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11/544,912 2006-10-05
US11/544,912 US20080086250A1 (en) 2006-10-05 2006-10-05 Squib driver circuit diagnostic system and method

Publications (2)

Publication Number Publication Date
WO2008045684A2 WO2008045684A2 (en) 2008-04-17
WO2008045684A3 true WO2008045684A3 (en) 2008-07-24

Family

ID=39283984

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2007/079584 WO2008045684A2 (en) 2006-10-05 2007-09-26 Squib driver circuit diagnostic system and method

Country Status (2)

Country Link
US (1) US20080086250A1 (en)
WO (1) WO2008045684A2 (en)

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US20090021383A1 (en) * 2007-07-16 2009-01-22 International Business Machines Corporation Method for redundant control of service indicator leds
JP4469886B2 (en) * 2007-09-20 2010-06-02 日立オートモティブシステムズ株式会社 Load drive circuit
KR101219240B1 (en) * 2011-01-31 2013-01-08 로베르트 보쉬 게엠베하 Battery pack
US9250051B1 (en) * 2011-03-25 2016-02-02 The Boeing Company Squib initiation sequencer
EP2620332B1 (en) * 2012-01-30 2019-07-24 Zodiac Cabin Controls GmbH Airbag data exchange system
KR20130118539A (en) 2012-04-20 2013-10-30 삼성에스디아이 주식회사 Battery pack
US9018957B2 (en) * 2012-11-29 2015-04-28 Autoliv Asp, Inc. Method and system for diagnostic measurement of motor vehicle restraint system squib loop resistance
US9139155B2 (en) 2013-09-18 2015-09-22 Freescale Semiconductor, Inc. Squib driver diagnostic circuit and method
US9499115B2 (en) 2014-05-02 2016-11-22 Takata Protection Systems, Inc. Apparatus, system, and method for diagnosing initiators in airbag systems
CN115840408A (en) * 2015-06-17 2023-03-24 Abb瑞士股份有限公司 Control system with error detection
CN110521120B (en) * 2017-04-25 2023-03-10 日立安斯泰莫株式会社 electronic control unit
JP6972875B2 (en) * 2017-10-05 2021-11-24 株式会社デンソー Electronic control device
CN107908176B (en) * 2017-11-09 2021-03-12 上汽通用五菱汽车股份有限公司 Vehicle control unit driving port detection device and detection method thereof
US10840692B2 (en) 2017-12-20 2020-11-17 Veoneer Us, Inc. Squib circuit low side battery short protection
US10892613B2 (en) 2017-12-20 2021-01-12 Veoneer Us, Inc. Squib circuit high side battery short protection
US10840900B2 (en) 2017-12-20 2020-11-17 Veoneer Us, Inc. Squib circuit high side ground short protection
US11101636B2 (en) 2017-12-20 2021-08-24 Veoneer Us, Inc. Voltage regulator for a squib driver circuit
US11125834B2 (en) * 2018-02-20 2021-09-21 Veoneer Us, Inc. Diagnosis of squib loop leakage resistance
US10583794B2 (en) * 2018-03-29 2020-03-10 Veoneer Us, Inc. Method and system for diagnostic measurement of fault condition for common connected squib loops in restraint control module
US11613222B2 (en) * 2018-03-29 2023-03-28 Veoneer Us, Llc Method and system for safe diagnosis of squib loop components using transient response characteristics for restraint control module
US11479198B2 (en) * 2018-10-25 2022-10-25 Veoneer Us, Llc Active power blocking circuit for restraint control module
CN115167189A (en) * 2021-04-07 2022-10-11 英飞凌科技奥地利有限公司 Driver device, method for monitoring a driver device, and power supply device
CN116737475A (en) * 2023-05-29 2023-09-12 中国第一汽车股份有限公司 Chip diagnosis method, device, equipment and storage medium

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US6037674A (en) * 1998-06-26 2000-03-14 Motorola, Inc. Circuit and method of current limiting a half-bridge driver
US6823244B2 (en) * 1995-06-07 2004-11-23 Automotive Technologies International, Inc. Vehicle part control system including electronic sensors

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Publication number Priority date Publication date Assignee Title
US5293153A (en) * 1991-04-09 1994-03-08 Trw, Inc. Method and apparatus for testing an airbag restraint system with parallel sensors
US6823244B2 (en) * 1995-06-07 2004-11-23 Automotive Technologies International, Inc. Vehicle part control system including electronic sensors
US6037674A (en) * 1998-06-26 2000-03-14 Motorola, Inc. Circuit and method of current limiting a half-bridge driver

Also Published As

Publication number Publication date
US20080086250A1 (en) 2008-04-10
WO2008045684A2 (en) 2008-04-17

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